A size read is not the tag read.

The size check reads the duration, the pixel size of the first video stream, and the display aspect when the file states one. It stops at 150 MB. The file stays in the browser.

The tag check lists eight container tags and stops before the duration line. The size check does not list those tags. A missing display aspect stays blank. The check does not calculate one from the pixel size.

Neither read uploads the file, changes the file, or uses a cloud output. A reframe export is a separate job.

A size or a tag list does not guarantee reach, approval, or a lower ad cost.